172072007 has 4 divisors (see below), whose sum is σ = 172565400. Its totient is φ = 171578616.

The previous prime is 172072001. The next prime is 172072027. The reversal of 172072007 is 700270271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172072007 - 2⁸ = 172071751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172072001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246173 + ... + 246870.

It is an arithmetic number, because the mean of its divisors is an integer number (43141350).

Almost surely, 2^172072007 is an apocalyptic number.

172072007 is a deficient number, since it is larger than the sum of its proper divisors (493393).

172072007 is an equidigital number, since it uses as much as digits as its factorization.

172072007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493392.

The product of its (nonzero) digits is 1372, while the sum is 26.

The square root of 172072007 is about 13117.6220024820. The cubic root of 172072007 is about 556.2073728728.

The spelling of 172072007 in words is "one hundred seventy-two million, seventy-two thousand, seven".